TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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TORICH Seamless Carbon Mild 300mm Large Diameter ST37 15Mo3 High Pressure 4 Inch C45 Heavyr-caliber Heavy Thick Wall Steel Pipe
Size Range:
OD:20-300mm
WT: 5-50mm
Length: Max 12000mm
Characteristic:
Good OD and ID tolerance controlled to Technical Standard
Stable quality
Tolerances:
OD:
D 5 – 10 mm: ± 0.15 mm
D 11 – 30 mm: ± 0.30 mm
D 32 – 50 mm: ± 0.40 mm
D 51 – 140 mm: ± 0.8%
WT:
S 0.4 – 1 mm: ± 0.12 mm
S 1.2 – 5 mm: ± 10%
S 5.5 – 12 mm: ± 8%
Notes:
1. Steel grades: 10, 20, 35, 45, 10Mn2, 15Cr, 20Cr, 40Cr, 30CrMnSi, 15CrMo acc. to GOST 1050-88, GOST 19281-89, GOST 4543-71. Others steel grades are available subject to agreement.
2. Dimensions and tolerances acc. to GOST 8734-75.
3. Technical requirements acc. to GOST 8733-74.
4. Length from 1.5 to 11.5 m depending on diameter and wall thickness.
| Standard | Steel Grade | C | Si | Mn | P | S |
| EN 10305-1 | E215 | ≤0.10 | ≤0.05 | ≤0.70 | ≤0.025 | ≤0.025 |
| E235 | ≤0.17 | ≤0.35 | ≤1.20 | ≤0.025 | ≤0.025 | |
| E355 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 | |
| DIN 2391 | St35 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 |
| St37.4 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
| St45 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
| St52 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 | |
| GB/T 3639 | 10 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | ≤0.030 | ≤0.030 |
| 20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.030 | ≤0.030 | |
| 35 | 0.32-0.39 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.030 | |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.030 | |
| Q345B | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.030 |
Production Steel Tube:
Eddy Current Test and Ultrasonic Test:
Packing: